钢混组合连续梁在互通立交桥中的应用

Application of Steel-Concrete Composite Continuous Beams in Interchange Bridges

摘要:

介绍了济阳路外环立交的桥梁工程总体设计，并对桥梁总体布置、跨径布置、结构型式选取、断面形式等做了介绍。该立交大量采用曲线连续钢混组合梁，介绍了结构的受力特点、断面构造型式、横隔板及加劲等的设计。对于组合梁的负弯矩区混凝土桥面板开裂问题，介绍了采取的处理方法，并对几项施工工艺措施进行受力对比分析，得出比较结果。最后，对施工期间开口槽形钢梁的设计进行介绍， 对临时墩的作用进行了分析。

Abstract:

The overall design of the bridge engineering of the Outer Ring Interchange on Jiyang Road is introduced, and the general layout, span layout, structure type selection and section form of the interchange are also introduced. A large number of curved continuous steel-concrete composite beams are used in this interchange. The mechanical characteristics, sectional structure type, transverse partition and stiffening design of the structure are introduced. For the cracking of concrete bridge deck in negative moment area of composite beam, the treatment methods to be adopted are introduced. And the comparison and analysis of the stress are conducted on several construction process measures, and the comparison results are obtained. Finally, the design of the open channel steel beam during construction is introduced, and the functions of the temporary pier are analyzed.